Commonwealth legislation

AD/PW4000/1 - Thrust Reverser Aft Cascade Support

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Commonwealth

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legislative instrument

Plain English Summary

4/10 complexity

Requires operators of PW4000 engines on Airbus A300‑600 and A310‑300 aircraft fitted under STC SJ514NE to carry out interim inspections of the thrust reverser aft cascade support per Pratt & Whitney Service Bulletin PW4NAC 78‑78 Rev 6, and allows fitting specified replacement frames (PNs 221‑0516‑505/506) as terminating action. It responds to reported support failures that released reverser hardware; compliance is effective 30 January 1997. Inspection and modification costs and aircraft downtime fall to operators; the Civil Aviation Safety Authority enforces the directive.

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AD/PW4000/1 - Thrust Reverser Aft Cascade Support

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Pratt and Whitney Turbine Engines - PW4000 Series

AD/PW4000/1 Thrust Reverser Aft Cascade Support 2/97

Applicability: PW4000 series engines installed on Airbus A300-600 and A310-300 series aircraft incorporating a thrust reverser per Supplemental Type Certificate No. SJ514NE.

Requirement: Inspect the thrust reverser aft cascade support frame in accordance the technical requirements of Pratt and Whitney Service Bulletin No. PW4NAC 78-78, Revision 6 dated 6 March 1996, Part 1 - Interim inspection.

Incorporation of aft cascade support frames, Part Nos. 221-0516-505 (LH) and 221- 0516-506 (RH), constitutes terminating action for this Directive. Refer to Pratt and Whitney Service Bulletin No. PW4NAC 78-78, Revision 6, dated 6 March 1996, Part 2 - Permanent Modification.

Note 1: FAA AD 96 -13-08 also refers.

Note 2: Inspection and modification to later issues of the referenced service bulletin satisfies the intent of this Directive.

Compliance: Effective 30 January 1997; as detailed in the requirement document.

Background: There have been reports of thrust reverser aft cascade support failures which have resulted in liberation of thrust reverser hardware during reverse thrust operation.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/PW4000/1 - Thrust Reverser Aft Cascade Support